CN110761293B - Foundation pit anchor cable orifice device and foundation pit anchor cable orifice construction method - Google Patents
Foundation pit anchor cable orifice device and foundation pit anchor cable orifice construction method Download PDFInfo
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- CN110761293B CN110761293B CN201910932853.1A CN201910932853A CN110761293B CN 110761293 B CN110761293 B CN 110761293B CN 201910932853 A CN201910932853 A CN 201910932853A CN 110761293 B CN110761293 B CN 110761293B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
Abstract
The invention provides a foundation pit anchor cable orifice device and a foundation pit anchor cable orifice construction method. Wherein, foundation ditch anchor rope drill way device includes: the sealing device comprises a sleeve, a plugging layer and two annular sealing elements; the sleeve is used for being arranged in the opening of the support pile, a gap between the outer wall of the sleeve and the opening is filled with a plugging layer, and an anchor cable hole forming pipe is arranged in the sleeve in a penetrating mode; the two sealing elements are respectively connected with the two ends of the sleeve in a one-to-one correspondence manner and are in contact with the anchor cable pore-forming pipe. According to the invention, the gap between the sleeve and the opening of the support pile is filled with the plugging layer for plugging and reinforcing, so that the sealing performance and the strength of the opening are improved, hole collapse is avoided, the two end parts of the sleeve are respectively provided with the sealing parts, the two sealing parts are respectively contacted with the anchor cable hole forming pipe, the gap between the sleeve and the anchor cable hole forming pipe can be plugged and sealed, the sealing performance of the anchor cable hole of the foundation pit is effectively improved, water and sand gushes are avoided, the stability and the safety of the foundation pit are ensured, the structure is simple, and the operation is convenient.
Description
Technical Field
The invention relates to the technical field of building engineering, in particular to a foundation pit anchor cable orifice device and a foundation pit anchor cable orifice construction method.
Background
In the deep foundation pit construction process of urban building engineering, the foundation pit supporting type of the support piles, the stirring pile waterproof curtain and the prestressed anchor cables is an economical and reasonable foundation pit supporting scheme. In general, anchor cable construction adopts a steel sleeve hole forming process, and a steel sleeve penetrates through a temporary hole of a waterproof curtain without a blocking structure or is only sealed through a sealing element. Due to the fact that deep sand layers and abundant underground water exist in rivers and coastal alluvial areas, severe hole collapse is prone to occurring when anchor cables are constructed to form holes and penetrate through water-containing sand layers. And, when the anchor rope drill way was in the geological environment that ground water level is high, the water yield is abundant, the easy phenomenon that appears gushing water and gushing sand in a large number caused the foundation ditch to warp the increase, can appear the risk that the local landslide that collapses of foundation ditch even.
Disclosure of Invention
In view of the above, the invention provides a foundation pit anchor cable orifice device, and aims to solve the problems that hole collapse and water and sand gushing are easy to occur in an anchor cable orifice in the prior art. The invention further provides a foundation pit anchor cable orifice construction method.
In one aspect, the present invention provides a foundation pit anchor cable orifice device, comprising: the sealing device comprises a sleeve, a plugging layer and two annular sealing elements; the sleeve is used for being placed in the opening of the support pile, a gap between the outer wall of the sleeve and the opening is filled with a plugging layer, and an anchor cable hole forming pipe penetrates through the interior of the sleeve; the two sealing elements are respectively connected with the two ends of the sleeve in a one-to-one correspondence manner and are in contact with the anchor cable pore-forming pipe.
Further, in the foundation pit anchor cable orifice device, a preset gap is formed between the sleeve and the anchor cable hole forming pipe, and each sealing element extends towards the anchor cable hole forming pipe and is in contact with the anchor cable hole forming pipe so as to block the gap between the sleeve and the anchor cable hole forming pipe.
Further, in the above foundation pit anchor cable orifice device, each sealing member includes: the first sealing body and the second sealing body are annular; wherein, the first end of first seal all is connected with the tip that the sleeve pipe corresponds, and the second end and the perpendicular connection of second seal of first seal, second seal lid are located between sleeve pipe and the anchor rope pore-forming pipe and are contacted with anchor rope pore-forming pipe to the clearance between shutoff sleeve pipe and the anchor rope pore-forming pipe.
Further, above-mentioned foundation ditch anchor rope drill way device still includes: and the grouting pipe is inserted in the plugging layer.
Further, above-mentioned foundation ditch anchor rope drill way device still includes: and the slurry return pipe is inserted in the plugging layer.
According to the invention, the gap between the sleeve and the open pore of the support pile is filled with the plugging layer for plugging, so that the sealing performance is improved, the gap between the sleeve and the open pore can be reinforced, the strength of the open pore is improved, the occurrence of hole collapse is avoided, in addition, the sealing parts are arranged at the two end parts of the sleeve, and the two sealing parts are in contact with the anchor cable hole forming pipe, so that the gap between the sleeve and the anchor cable hole forming pipe can be plugged and sealed, the sealing performance of the anchor cable hole opening of the foundation pit is effectively improved, the phenomenon of water burst and sand burst is avoided, the stability and the safety of the foundation pit are ensured, the problems that the anchor cable hole opening is easy to collapse and water burst and sand burst are caused in the prior art are solved, the structure is simple, the operation is convenient.
On the other hand, the invention also provides a foundation pit anchor cable orifice construction method, which comprises the following steps: a connecting step, wherein two ends of the sleeve are respectively provided with a sealing element; a hole opening step, wherein holes are formed in the support piles; a grouting step, namely placing the connected sleeve into the open hole, and grouting and plugging a gap between the open hole and the outer wall of the sleeve; and an installation step, inserting an anchor cable hole forming pipe into the sleeve, wherein the anchor cable hole forming pipe penetrates through the two sealing pieces and is in contact with the two sealing pieces.
Further, in the foundation pit anchor cable orifice construction method, a preset gap is formed between the sleeve and the anchor cable hole forming pipe, and each sealing element extends towards the anchor cable hole forming pipe and is in contact with the anchor cable hole forming pipe so as to block the gap between the sleeve and the anchor cable hole forming pipe.
Further, in the above method for constructing an anchor cable orifice of a foundation pit, each sealing member includes: the first sealing body and the second sealing body are annular; wherein, the first end of first seal all is connected with the tip that the sleeve pipe corresponds, and the second end and the perpendicular connection of second seal of first seal, second seal lid are located between sleeve pipe and the anchor rope pore-forming pipe and are contacted with anchor rope pore-forming pipe.
Further, in the foundation pit anchor cable orifice construction method, in the connecting step, a grouting pipe is arranged outside the sleeve; in the grouting step, the grouting pipe and the sleeve are arranged in the open hole, and grouting is performed in the grouting pipe to plug the gap between the open hole and the outer wall of the sleeve.
Further, in the foundation pit anchor cable orifice construction method, in the connecting step, a slurry return pipe is further arranged outside the sleeve; in the grouting step, the slurry return pipe and the sleeve are arranged in the open hole, and slurry in a gap between the open hole and the outer wall of the sleeve is led out from the slurry return pipe.
According to the invention, the sealing performance is improved by grouting and plugging the gap between the opening and the outer wall of the sleeve, the gap between the sleeve and the opening can be reinforced, the strength of the opening is improved, hole collapse is avoided, the two end parts of the sleeve are respectively provided with the sealing piece, and the two sealing pieces are respectively contacted with the anchor cable hole forming pipe, so that the gap between the sleeve and the anchor cable hole forming pipe can be plugged and sealed, the sealing performance of the hole of the anchor cable of the foundation pit is effectively improved, the phenomenon of water burst and sand burst is avoided, the stability and the safety of the foundation pit are ensured, the structure is simple, the operation is convenient, and the construction speed is improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a foundation pit anchor cable orifice device provided in an embodiment of the present invention;
fig. 2 is an enlarged schematic structural view of a foundation pit anchor cable orifice device provided in an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a flowchart of a foundation pit anchor cable orifice construction method provided by an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Foundation ditch anchor rope drill way device embodiment:
referring to fig. 1-3, a preferred construction of the foundation pit anchor cable orifice device of the present embodiment is shown. As shown, foundation pit anchor cable orifice means includes: a sleeve 1, a plugging layer 2 and two annular sealing elements 3. Wherein, the supporting piles 4 are provided with openings which are in an inclined state and penetrate through the supporting piles 4 and the waterproof curtain. The sleeve 1 is arranged in the open pore, the outer diameter of the sleeve 1 is smaller than the inner diameter of the open pore, a gap is formed between the outer wall of the sleeve 1 and the inner wall of the open pore, and the gap is filled with the plugging layer 2. This shutoff layer 2 is that the thick cement thick liquid pours into to solidify in the clearance between the outer wall of sleeve pipe 1 and the trompil inner wall and forms to the clearance between the outer wall of shutoff sleeve pipe 1 and the trompil inner wall. The interior of the casing 1 is used for inserting the cable perforation pipe 5, that is, the cable perforation pipe 5 is arranged in the casing 1, but the cable perforation pipe 5 is not connected with the casing 1, and only the casing 1 is inserted.
The two sealing elements 3 are respectively connected with two ends of the sleeve 1 in a one-to-one correspondence mode, the two ends of the sleeve 1 are respectively provided with one sealing element 3, and each sealing element 3 is in contact with the anchor cable hole forming pipe 5. Specifically, sealing member 3 sets up in the tip of sleeve pipe 1, and sealing member 3 is the annular, and anchor rope becomes hole pipe 5 and wears to establish two sealing member 3 in proper order after contacting with two sealing member 3 homogeneous phases. In order to facilitate the disassembly and assembly, the anchor cable hole forming pipe 5 inevitably leaves a gap with the casing pipe 1 when penetrating the casing pipe 1, and each sealing element 3 is used for plugging and sealing the gap between the casing pipe 1 and the anchor cable hole forming pipe 5.
The connection between each sealing element 3 and the corresponding end of the casing 1 may be a detachable connection, preferably, the end of each sealing element 3 corresponding to the casing 1 is fixed by a band clamp.
It can be seen that, in this embodiment, the gap between the openings of the sleeve 1 and the support pile 4 is filled with the plugging layer 2 for plugging, so that the sealing performance is improved, the gap between the sleeve 1 and the openings can be reinforced, the strength of the openings is improved, hole collapse is avoided, the sealing parts 3 are arranged at the two ends of the sleeve 1, the two sealing parts 3 are in homogeneous contact with the anchor cable hole forming pipe 5, the gap between the sleeve 1 and the anchor cable hole forming pipe 5 can be plugged and sealed, the sealing performance of the hole opening of the anchor cable of the foundation pit is effectively improved, the phenomenon of water gushing and sand gushing is avoided, the stability and the safety of the foundation pit are ensured, the problems that the hole collapse and the sand gushing are easily caused at the hole opening of the anchor cable in the prior art are solved, the structure is simple, the operation is convenient, and the construction speed is.
With continued reference to fig. 1 to 3, in the above embodiment, a preset gap is formed between the casing 1 and the anchor cable hole forming pipe 5, specifically, the inner diameter of the casing 1 is greater than the outer diameter of the anchor cable hole forming pipe 5, and the preset gap may be determined according to actual conditions, which is not limited in this embodiment.
Each seal 3 extends to the cable bore forming tube 5 after the end connection corresponding to the casing 1, and each seal 3 is in contact with the cable bore forming tube 5, and each seal 3 is used for blocking a gap between the casing 1 and the cable bore forming tube 5.
Preferably, each seal 3 comprises: a first sealing body 31 and a second sealing body 32. The first sealing body 31 and the second sealing body 32 are both annular, the first end of the first sealing body 31 is connected with the end part corresponding to the sleeve 1, the second end of the first sealing body 31 is vertically connected with the second sealing body 32, and the second sealing body 32 is arranged between the sleeve 1 and the anchor cable hole forming pipe 5 in a covering mode. Specifically, the first sealing body 31 is connected to the outer wall of the end portion corresponding to the sleeve 1, the first sealing body 31 extends along the length direction of the sleeve 1, the second sealing body 32 is disposed at the end surface of the end portion corresponding to the sleeve 1 and extends toward the center of the sleeve 1, and the cross section formed by the second sealing body 32 and the first sealing body 31 is L-shaped.
The second sealing body 32 is in contact with the cable bore forming tube 5, and the second sealing body 32 is used for sealing a gap between the casing 1 and the cable bore forming tube 5.
In specific implementation, the first sealing body 31 and the second sealing body 32 may be integrally formed. In specific implementation, each sealing element 3 may be a rubber ferrule with an "L" shaped cross-section.
It can be seen that, in this embodiment, through setting up the clearance between sleeve pipe 1 and the anchor rope pore-forming pipe 5, the installation of the anchor rope pore-forming pipe 5 of being convenient for is dismantled and is changed, and then is convenient for adjust according to the condition of job site, and two sealing members 3 all carry out the shutoff to the clearance between sleeve pipe 1 and the anchor rope pore-forming pipe 5, have guaranteed the leakproofness between anchor rope pore-forming pipe 5 and the trompil effectively, avoid appearing gushing water and gushing sand, have guaranteed the stability and the security of foundation ditch.
With continued reference to fig. 1-3, in the above embodiments, the foundation pit anchor cable orifice device may further include: and a grouting pipe 6. Wherein, slip casting 6 inserts and locates in shutoff layer 2, and specifically, slip casting 6 can be adjacent with the outer wall of sleeve pipe 1 and set up, also can, has preset distance between slip casting 6 and the sleeve pipe 1. In specific implementation, the preset distance may be determined according to actual conditions, and this embodiment does not limit this.
During the preparation, before sleeve pipe 1 is placed in the trompil, be connected slip casting pipe 6 and sleeve pipe 1 in advance, during the connection, slip casting pipe 6 can set up in the outer wall of sleeve pipe 1, also can, slip casting pipe 6 is connected so that have the distance of predetermineeing between slip casting pipe 6 and the sleeve pipe 1 through support frame and sleeve pipe 1. After the sleeve 1 and the grouting pipe 6 are placed in the open hole, grouting is performed into the gap between the sleeve 1 and the open hole through the grouting pipe 6, and the gap between the sleeve 1 and the open hole is blocked to form a blocking layer 2.
It can be seen that, in this embodiment, through setting up slip casting pipe 6, can guarantee effectively that the thick liquid steadily pours into to the clearance between sleeve pipe 1 and the trompil into, has guaranteed the closely knit degree of slip casting, and then has improved the stability between sleeve pipe 1 and the trompil, avoids appearing collapsing the hole, has improved the stability of foundation ditch.
With continued reference to fig. 1-3, in the above-described embodiment, the anchor cable orifice device of the foundation pit may further include: and a slurry return pipe 7. The slurry return pipe 7 is inserted into the plugging layer 2, specifically, the slurry return pipe 7 and the outer wall of the sleeve 1 can be arranged close to each other, or a preset distance is formed between the slurry return pipe 7 and the sleeve 1. In specific implementation, the preset distance may be determined according to actual conditions, and this embodiment does not limit this.
Preferably, the grouting pipe 6 and the grout return pipe 7 are symmetrically arranged with respect to the central axis of the casing 1.
During manufacturing, before the sleeve 1 is placed in the open hole, the grouting pipe 6 and the slurry return pipe 7 are connected with the sleeve 1 in advance, and during connection, the slurry return pipe 7 can be arranged on the outer wall of the sleeve 1, or the slurry return pipe 7 is connected with the sleeve 1 through a support frame so that a preset distance is reserved between the slurry return pipe 7 and the sleeve 1. After the sleeve 1 is placed in the open hole together with the grouting pipe 6 and the slurry return pipe 7, the grouting pipe 6 is used for grouting into the gap between the sleeve 1 and the open hole so as to plug the gap between the sleeve 1 and the open hole, and the slurry in the gap is discharged through the slurry return pipe 7, so that the plugging layer 2 is formed.
It can be seen that, in this embodiment, through setting up slurry return pipe 7, can guarantee effectively that the thick liquid steadily pours into to the clearance between sleeve pipe 1 and the trompil into, has guaranteed the closely knit degree of slip casting, and then has improved the stability between sleeve pipe 1 and the trompil, avoids appearing collapsing the hole.
To sum up, in this embodiment, the gap between the trompil through sleeve pipe 1 and fender pile 4 is filled the shutoff layer 2 and is carried out the shutoff, sealing performance has been improved, and can consolidate the clearance between sleeve pipe 1 and the trompil, the intensity of trompil department has been improved, hole collapse is avoided appearing, and, two tip of sleeve pipe 1 all set up sealing member 3, two sealing member 3 and anchor rope pore-forming pipe 5 homogeneous phase contact, can carry out the shutoff to the clearance between sleeve pipe 1 and the anchor rope pore-forming pipe 5 and seal, the leakproofness of foundation ditch anchor rope pore department has effectively been improved, the phenomenon that the gushing water gushes sand has been avoided appearing, the stability and the security of foundation ditch have been guaranteed, moreover, the steam generator is simple in structure, and convenient for operation, construction speed has been improved.
The embodiment of the foundation pit anchor cable orifice construction method comprises the following steps:
the embodiment also provides a foundation pit anchor cable orifice construction method, and referring to fig. 4, fig. 4 is a flowchart of the foundation pit anchor cable orifice construction method provided by the embodiment of the invention. As shown in the figure, the foundation pit anchor cable orifice construction method comprises the following steps:
in connection with step S1, a sealing member is disposed at each end of the sleeve.
Specifically, referring to fig. 1 to 3, one sealing member 3 is provided at each of both ends of the casing 1 in advance, and each sealing member 3 is detachably connected to the corresponding end of the casing 1. Preferably, the end of each sealing element 3 corresponding to the casing 1 is locked and fixed by a hoop clamp. The outside of each seal 3 may be temporarily sealed with a plastic film of a predetermined thickness. In specific implementation, the preset thickness may be determined according to actual conditions, and this embodiment does not limit this.
In particular, each seal 3 may be a rubber sleeve.
And a hole forming step S2, forming holes on the support piles.
Specifically, referring to fig. 1, the holes are opened in the support piles 4 and the waterproof curtain, and the holes are opened by a drilling apparatus.
And a grouting step S3, placing the connected sleeve into the opening, and grouting and plugging the gap between the opening and the outer wall of the sleeve.
Specifically, referring to fig. 1 to 3, the sleeve 1 and the two sealing members 3 are connected and then placed in the opening. Wherein, the external diameter of sleeve pipe 1 is less than the internal diameter of trompil, then has the clearance between the inner wall of trompil and the outer wall of sleeve pipe 1, and the slip casting is in this clearance, and the clearance between shutoff sleeve pipe 1 and the trompil after the thick liquid solidification. Wherein, the thick cement paste can be injected into the gap between the opening and the outer wall of the casing 1. In specific implementation, the cement paste can be quick-setting cement paste.
And an installation step S4, inserting the anchor cable hole forming pipe into the sleeve, and penetrating the anchor cable hole forming pipe through the two sealing elements and contacting the two sealing elements.
Specifically, after the strength of the slurry in the gap between the outside of the casing 1 and the opening reaches a preset strength, an anchor cable forming pipe 5 is inserted into the casing 1. Because both ends of sleeve pipe 1 all are provided with sealing member 3, then anchor rope becomes hole pipe 5 and wears to establish two sealing member 3 and place in sleeve pipe 1, but does not have the relation of being connected between anchor rope becomes hole pipe 5 and the sleeve pipe 1, only wears to establish sleeve pipe 1, and the anchor rope becomes hole pipe 5 and is for contacting between two sealing member 3.
In order to facilitate the disassembly and assembly, the anchor cable hole forming pipe 5 inevitably leaves a gap with the casing pipe 1 when penetrating the casing pipe 1, and each sealing element 3 is used for plugging and sealing the gap between the casing pipe 1 and the anchor cable hole forming pipe 5.
In a specific implementation, the preset strength may be determined according to an actual situation, and this embodiment does not limit this. In the present embodiment, the predetermined strength is 5 MPa.
After the anchor cable pore-forming pipe is inserted into the sleeve, other foundation pit anchor cable pore-forming constructions can be performed according to actual conditions, and the embodiment is not repeated herein.
It can be seen that, in this embodiment, through pouring into thick liquid shutoff in the clearance between trompil and the sleeve pipe outer wall, sealing performance has been improved, and can consolidate the clearance between sleeve pipe and the trompil, the intensity of trompil department has been improved, avoid appearing collapsing the hole, and, sheathed tube two tip all set up the sealing member, two sealing members all contact with anchor rope pore-forming pipe, can carry out the shutoff to the clearance between sleeve pipe and the anchor rope pore-forming pipe and seal, foundation ditch anchor rope pore department's leakproofness has been improved effectively, the phenomenon that gushes water and gush sand has been avoided appearing, the stability and the security of foundation ditch have been guaranteed, moreover, the steam generator is simple in structure, and the operation is convenient, and the.
In the above embodiment, referring to fig. 1 to 3, a preset gap is formed between the casing 1 and the anchor cable hole forming pipe 5, specifically, the inner diameter of the casing 1 is greater than the outer diameter of the anchor cable hole forming pipe 5, and the preset gap may be determined according to actual conditions, which is not limited in this embodiment.
Each seal 3 extends to the cable bore forming tube 5 after the end connection corresponding to the casing 1, and each seal 3 is in contact with the cable bore forming tube 5, and each seal 3 is used for blocking a gap between the casing 1 and the cable bore forming tube 5.
Preferably, with reference to fig. 2, each seal 3 comprises: a first sealing body 31 and a second sealing body 32. The first sealing body 31 and the second sealing body 32 are both annular, the first end of the first sealing body 31 is connected with the end part corresponding to the sleeve 1, the second end of the first sealing body 31 is vertically connected with the second sealing body 32, and the second sealing body 32 is arranged between the sleeve 1 and the anchor cable hole forming pipe 5 in a covering mode. Specifically, the first sealing body 31 is connected to the outer wall of the end portion corresponding to the sleeve 1, the first sealing body 31 extends along the length direction of the sleeve 1, the second sealing body 32 is disposed at the end surface of the end portion corresponding to the sleeve 1 and extends toward the center of the sleeve 1, and the cross section formed by the second sealing body 32 and the first sealing body 31 is L-shaped.
The second sealing body 32 is in contact with the cable bore forming tube 5, and the second sealing body 32 is used for sealing a gap between the casing 1 and the cable bore forming tube 5.
In specific implementation, the first sealing body 31 and the second sealing body 32 may be integrally formed. In specific implementation, each sealing element 3 may be a rubber ferrule with an "L" shaped cross-section.
It can be seen that, in this embodiment, through setting up the clearance between sleeve pipe 1 and the anchor rope pore-forming pipe 5, the installation of the anchor rope pore-forming pipe 5 of being convenient for is dismantled and is changed, and then is convenient for adjust according to the condition of job site, and two sealing members 3 all carry out the shutoff to the clearance between sleeve pipe 1 and the anchor rope pore-forming pipe 5, have guaranteed the leakproofness between anchor rope pore-forming pipe 5 and the trompil effectively, avoid appearing gushing water and gushing sand, have guaranteed the stability and the security of foundation ditch.
In the above embodiment, in the connecting step S1, the grout pipe is provided outside the sleeve.
Specifically, referring to fig. 1 to 3, the grouting pipe 6 may be disposed on an outer wall of the casing 1, and the grouting pipe 6 may be connected to the casing 1 by a support frame so that a predetermined distance is provided between the grouting pipe 6 and the casing 1. In specific implementation, the preset distance may be determined according to actual conditions, and this embodiment does not limit this.
In the grouting step S3, the grouting pipe and the sleeve are both placed in the opening, and grouting is performed into the grouting pipe to close the gap between the opening and the outer wall of the sleeve.
Specifically, after the sleeve 1 is connected with the two sealing members 3 and the grouting pipe 6 and then placed in the open hole, the grouting pipe 6 is used for grouting into the gap between the sleeve 1 and the open hole to plug the gap between the sleeve 1 and the open hole, so as to form the plugging layer 2.
It can be seen that, in this embodiment, through setting up the slip casting pipe, can guarantee effectively that the thick liquid steadily pours into to the clearance between sleeve pipe and the trompil into, has guaranteed the closely knit degree of slip casting, and then has improved the stability between sleeve pipe and the trompil, avoids appearing collapsing the hole, has improved the stability of foundation ditch.
In the above embodiment, in the connection step S1, a slurry return pipe is further provided outside the sleeve.
Specifically, referring to fig. 1 to 3, the slurry return pipe 7 may be disposed on an outer wall of the casing 1, or the slurry return pipe 7 may be connected to the casing 1 through a support frame so that a preset distance is provided between the slurry return pipe 7 and the casing 1. In specific implementation, the preset distance may be determined according to actual conditions, and this embodiment does not limit this.
In the grouting step S3, the slurry return pipe and the sleeve are both placed in the opening, and the slurry in the gap between the opening and the outer wall of the sleeve is led out from the slurry return pipe.
Specifically, after the sleeve 1 is connected with the two sealing members 3, the grouting pipe 6 and the slurry return pipe 7 and then placed in the open pore, the grouting pipe 6 is used for grouting into the gap between the sleeve 1 and the open pore to plug the gap between the sleeve 1 and the open pore, and the slurry in the gap is led out through the slurry return pipe 7, so that the plugging layer 2 is formed.
It can be seen that, in this embodiment, through setting up the back flow pipe, can guarantee effectively that the thick liquid steadily pours into to the clearance between sleeve pipe 1 and the trompil into, has guaranteed the closely knit degree of slip casting, and then has improved the stability between sleeve pipe and the trompil, avoids appearing collapsing the hole.
To sum up, in this embodiment, through pouring into thick liquid shutoff in the clearance between trompil and the sleeve pipe outer wall, sealing performance has been improved, and can consolidate the clearance between sleeve pipe and the trompil, the intensity of trompil department has been improved, avoid appearing collapsing the hole, and, two tip of sheathed tube all set up the sealing member, two sealing members all contact with anchor rope pore-forming pipe, can carry out the shutoff to the clearance between sleeve pipe and the anchor rope pore-forming pipe and seal, the leakproofness of foundation ditch anchor rope pore department has been improved effectively, the phenomenon that gushes water and gush sand has been avoided appearing, the stability and the security of foundation ditch have been guaranteed, moreover, the steam generator is simple in structure, and the operation is convenient, and the construction.
It should be noted that the foundation pit anchor cable orifice device and the foundation pit anchor cable orifice construction method in the invention have the same principle, and related parts can be referred to each other.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (4)
1. A foundation pit anchor cable orifice device, comprising: the device comprises a sleeve (1), a plugging layer (2), two annular sealing elements (3) and a grouting pipe (6); wherein the content of the first and second substances,
the sleeve (1) is used for being placed in an opening of a support pile (4), a gap between the outer wall of the sleeve (1) and the opening is filled with the plugging layer (2), and an anchor cable hole forming pipe (5) is arranged in the sleeve (1) in a penetrating mode;
the two sealing elements (3) are respectively connected with two ends of the sleeve (1) in a one-to-one correspondence manner and are in contact with the anchor cable hole forming pipe (5);
a preset gap is reserved between the sleeve (1) and the anchor cable hole forming pipe (5), each sealing element (3) extends towards the anchor cable hole forming pipe (5) and is in contact with the anchor cable hole forming pipe (5) so as to block the gap between the sleeve (1) and the anchor cable hole forming pipe (5);
the grouting pipe (6) is inserted into the plugging layer (2);
each of the seals (3) comprises: a first sealing body (31) and a second sealing body (32) both having annular shapes; the first end of the first sealing body (31) is connected with the end part corresponding to the sleeve (1), the second end of the first sealing body (31) is vertically connected with the second sealing body (32), and the second sealing body (32) is arranged between the sleeve (1) and the anchor cable hole forming pipe (5) in a covering mode and is in contact with the anchor cable hole forming pipe (5).
2. The foundation pit anchor cable orifice device of claim 1, further comprising:
and the slurry return pipe (7) is inserted in the plugging layer (2).
3. A method of constructing using the foundation pit anchor cable orifice device of claim 1 or 2, comprising the steps of:
a connecting step, wherein two ends of the sleeve are respectively provided with a sealing element;
a hole opening step, wherein holes are formed in the support piles;
a grouting step, namely placing the connected sleeve into the open hole, and grouting and plugging a gap between the open hole and the outer wall of the sleeve;
inserting an anchor cable hole forming pipe into the sleeve, wherein the anchor cable hole forming pipe penetrates through the two sealing pieces and is in contact with the two sealing pieces;
a preset gap is formed between the sleeve and the anchor cable hole forming pipe, and each sealing element extends towards the anchor cable hole forming pipe and is in contact with the anchor cable hole forming pipe so as to block the gap between the sleeve and the anchor cable hole forming pipe;
in the connecting step, a grouting pipe is arranged outside the sleeve;
in the grouting step, the grouting pipe and the sleeve are arranged in the open hole, and grouting is performed in the grouting pipe to plug a gap between the open hole and the outer wall of the sleeve.
4. The method of construction according to claim 3,
in the connecting step, a slurry return pipe is arranged outside the sleeve;
in the grouting step, the slurry return pipe and the sleeve are arranged in the open hole, and slurry in a gap between the open hole and the outer wall of the sleeve is led out from the slurry return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910932853.1A CN110761293B (en) | 2019-09-29 | 2019-09-29 | Foundation pit anchor cable orifice device and foundation pit anchor cable orifice construction method |
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Citations (2)
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|---|---|---|---|---|
| JP2009249879A (en) * | 2008-04-04 | 2009-10-29 | Tanigaki Kenko:Kk | Anchoring hardware, slope stabilization structure using the anchoring hardware, and slope stabilization method |
| CN201649082U (en) * | 2010-03-09 | 2010-11-24 | 广东水电二局股份有限公司 | Device for preventing sand gushing at construction porthole of anchor wire drilling hole |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009249879A (en) * | 2008-04-04 | 2009-10-29 | Tanigaki Kenko:Kk | Anchoring hardware, slope stabilization structure using the anchoring hardware, and slope stabilization method |
| CN201649082U (en) * | 2010-03-09 | 2010-11-24 | 广东水电二局股份有限公司 | Device for preventing sand gushing at construction porthole of anchor wire drilling hole |
Non-Patent Citations (1)
| Title |
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| "试述富水砂层锚索微扰动施工技术措施及控制要点";陶芳良;《广东水利水电》;20100630;第42-45、58页第1-7节 * |
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